Look. This is ________ apple. It’s _______ red apple. .A. a; anB. an; anC. an; a
________ useful advice you gave us!
—Did you enjoy the party yesterday? –-________, so I left early.
If we don’t study hard, we will in our class.
My grandfather devoted all his time ______ poor children.
It’s very nice _____ you to give me so good ____.